<template>
      <view class="goods-list">
        <view v-for="(goods, i) in goodsList" :key="i" @click="gotoDetail(goods)">
          <MyGoods :goods="goods"></MyGoods>
        </view>
      </view>
</template>

<script>
  import MyGoods from '../../components/mygoods/mygoods.vue'
  export default {
    data() {
      return {
        // 查询参数
         queryInfo: {
              // 查询关键词
              query: '',
              // 商品分类Id
              cid: '',
              // 页码值
              pagenum: 1,
              // 每页显示多少条数据
              pagesize: 10,
            },
      // 商品列表的数据
      goodsList: [],
      // 是否正在请求数据
      isloading: false
      };
    },
    onLoad(options) {
      this.queryInfo.query = options.query || ''
      this.queryInfo.cid = options.cid || ''
      // 调用获取商品列表数据的方法
      this.getGoodsList()
    },
    methods:{
      async getGoodsList(callback) {
         // ** 打开节流阀
        this.isloading = true
        const { data: { meta, message } } = await uni.$http.get('/api/public/v1/goods/search', this.queryInfo)
        if(meta.status !== 200) return uni.showMsg()
        // ** 关闭节流阀
        this.isloading = false
        // ** 数据请求完，则停止下拉
        callback?.()
        this.total = message.total
        this.goodsList = [...this.goodsList, ...message.goods]
      },
      // 点击跳转到商品详情页面
      gotoDetail(item) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
    },
    // 触底的事件
    onReachBottom() {
      // 判断是否还有下一页数据
      if (this.queryInfo.pagenum * this.queryInfo.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
      // 判断是否正在请求其它数据，如果是，则不发起额外的请求
      if (this.isloading) return
      // 让页码值自增 +1
      this.queryInfo.pagenum += 1
      // 重新获取列表数据
      this.getGoodsList()
    },
    // 下拉刷新的事件
    onPullDownRefresh() {
      // 1. 重置关键数据
      this.queryInfo.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodsList = []
    
      // 2. 重新发起请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    },
    components:{
      MyGoods
    }
  }
</script>

<style scoped lang="scss">

</style>
